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Terminal fitting and method of producing it

a technology of terminal fittings and fittings, applied in the direction of coupling contact members, coupling device connections, electrical devices, etc., can solve the problems of limited number of terminal fittings, and affecting the operation of the terminal fittings

Inactive Publication Date: 2015-02-03
SUMITOMO WIRING SYST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a technique for improving the connection between terminal fittings and a carrier in a tube. By using a strike or bend on the ceiling plate, a contact portion is formed that protrudes from the inner surface of the ceiling plate. This contact portion allows for reduced space between the terminal fittings, making more fittings able to be connected to the carrier. Additionally, the strike or bend on the ceiling plate does not require actual pressing or result in extensional deformation. This technique further reduces the dead space created by the contact portion and allows for stability of the electrically conductive state. The receiving portion of the tube can also be improved by making longitudinal cuts and creating a base for reliable attachment.

Problems solved by technology

When the pressing portion is placed over the ceiling plate, the rectangular tube is often too bulky.
However, pressing the ceiling plate creates other problems as explained herein.
In addition to adding to the bulk of the terminal fitting, the pressing portion limited the number of terminal fittings that could be coupled to a carrier.
There is also a concern that the pressing could cause a local thinning of the plating layer.

Method used

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  • Terminal fitting and method of producing it
  • Terminal fitting and method of producing it
  • Terminal fitting and method of producing it

Examples

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first embodiment

[0030]FIGS. 1 to 6 show a first particular embodiment of the present invention. As shown in FIG. 5, a terminal fitting T1 is in a developed state after a conductive plate material is punched or cut out into a specified shape. A multitude of terminal fittings T1 in the developed state are coupled to a carrier 1 in a chain-like manner in a longitudinal direction of the carrier 1. The terminal fittings T1 in the developed state are cut off from the carrier 1 in a later step and assembled as the terminal fittings T1 having a desired shape after respective bending, folding, embossing, punching, stamping and / or striking steps.

[0031]A hollow (in forward and backward directions) rectangular or polygonal tube 2 is formed on or near the front of each terminal fitting T1 and a wire connection portion comprising at least one wire barrel 6 to be crimped and connected to a wire core and at least one insulation barrel 7 to be crimped and connected to a wire coating to be connected to a wire is fo...

fourth embodiment

[0052]However, in the fourth embodiment, a ceiling plate 8 is deformed (e.g. struck or embossed or bent) such that a ceiling plate side contact portion 18 and a struck or bent portion 19 are continuous without forming any boundary. Specifically, the ceiling plate 8 is struck to have a substantially uniform depth over a width range extending from a position near a first side plate 4 to the extending end edge thereof, and the inner surface of this struck or bent part can be held in surface contact with a mating terminal M over a specified width range. The depth of this struck or bent part corresponds to a plate thickness as in the other embodiments.

[0053]Other configurations are similar or same as in the other embodiments and, hence, similar functions and effects can be achieved.

[0054]The invention is not limited to the above described and illustrated embodiments. For example, the following embodiments are also included in the technical scope of the present invention.

[0055]The height ...

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Abstract

A terminal fitting has a rectangular tube (2) with a ceiling plate (8). A struck portion (19) is formed by striking an extending end edge of the ceiling plate (8) inwardly of the rectangular tube (2) while maintaining a plate thickness. The inner surface of this struck portion (19) is at the same height as the projecting end of a ceiling plate side contact portion (18) and the outer surface of the struck portion (19) is at the same height as the inner surface of the ceiling plate (8) around the contact portion. A pressing portion (9) is bent from the upper end edge of a second side plate (5) to extend substantially parallel to a bottom plate (3) and contacts the outer surface of the struck portion (19). The pressing portion (9) does not project in a height direction from the ceiling plate (8).

Description

BACKGROUND[0001]1. Field of the Invention[0002]The invention relates to a terminal fitting and a method of producing it.[0003]2. Description of the Related Art[0004]Generally, a female terminal fitting includes a rectangular tube into which a male tab is inserted. The rectangular tube is formed by a pair of side plates that stand at right angles from opposite left and right side edges of a bottom plate. A ceiling plate extends from the upper edge of one side plate to the upper edge of the other side plate. A pressing portion extends from the upper end edge of one side plate to the bottom plate and is placed on the ceiling plate to prevent it from opening. When the pressing portion is placed over the ceiling plate, the rectangular tube is often too bulky.[0005]U.S. Pat. No. 7,347,747 discloses recessing an area of the ceiling plate where the pressing portion is to be placed by pressing to make the terminal fitting less bulky. However, pressing the ceiling plate creates other problems...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H01R11/22H01R13/11
CPCH01R13/11H01R13/113
Inventor AMANO, TAKAMARUTANAKA, TSUTOMU
Owner SUMITOMO WIRING SYST LTD
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